The tall plant, called Giant Hogweed, with beautiful flowers if found in the wooded areas of Alton Baker park. It is becoming quite common throughout our area. I didn't realize how dangerous it can be. Check the link below and check out all eight photos. Just clink on the right arrow for the next photo.
Note this report by CBS - "Giant hogweed - a dangerous, invasive weed - recently began spreading across New York, sparking fear and warnings from the state's Department of Environmental Conservation. They say the plant can burn, scar, and even blind you - but what exactly is it and how can you avoid it? Keep clicking to get the scoop on this toxic plant..." http://tinyurl.com/pf2azqz)
Queen Anne's Lace is similar to Giant Hogweed, though it does not grow as tall. It is also called Wild Carrot. But one can get burns on the skin from it too! See - http://en.wikipedia.org/wiki/Daucus_carota
Also somilar to Giant Hogweed is Poison Hemlock. It is acutely toxic to people and animals. The flower looks much like both Giant Hogweed and Queen Anne's Lace. For photos, see - http://tinyurl.com/mqgomqa All three are found in the Pacific Northwest.
So there you have it, three similar plants! Whichever one it is, it is a noxious weed!